Manufacture of artificial stone



(NoModeL) 2 SheetsSheet 1.

W. H. HOOPES.

MANUFACTURE OF ARTIFICIAL STONE.

No. 255,991. Patented Apr. 4,1882.

2 Sheets-Sheet 2 s I A .55.:

(No Model.)

MAN UFAGTURE OF ARTIFICIAL STONE.

PATENT OFF CE.

WILLIAM H. HOOPES, OF BALTIMORE, MARYLAND MANUFACTURE OF ARTIFICIALSTONE.

SPECIFICATION forming part of Letters Patent No.

255,991, dated April 4, 1882.

Application filed August 12, 1881. Renewed March 14, 1882. (No model.)

To all whom it may concern:

Beit known that I, WM. H. HooPEs, of Baltimorecil.y,in the countyofBaltimore,andin the State of Maryland, have invented certain new anduseful Improvements in the Manufacture of Artificial Stone; and I dohereby declare that the following is afull, clear,and exact descriptionthereof, reference being had to the accompanying drawings, making a partof this specification, in which Figure 1 is a perspective view of myimproved device, and Fig. 2 is a front elevation of the same in positionfor use.

Letters of like name and kind refer to like parts in each of thefigures.

The object ofmy invention is to enable artificial-stone filling for thespaces between girders or beams to be manufactured in the position it isto occupy; and to this end itconsists, as an improvement in themanufacture of artificial stone,in a rolling support adapted to beplaced beneath and adjusted vertically to position with reference to thespace to be filled and r0 sustain the plastic stone while hardening,substantially as and for the purpose here inafter specified.

In the annexed drawings, A represents a rectangular frame, which issupported by or upon four ground-wheels, B, that are preferably swiveledor caster wheels.

Secured to and extending upward from each corner of the frame A is ahollow standard, 0, which is preferably round in cross-section, and

is securely supported in position by means of braces D,that extend fromone or more points between the ends ofsaid standard laterally to and areconnected with said frame.

Within each standard 0 is loosely fitted a bar, E, which is capable oflongitudinal motion therein, and at its upper end is secured to thelower side, at one corner, of a frame, F, that corresponds in size andshape to the like features of the frame A.

Journaled horizontally within suitable bearings upon the standards O ateach end of the device is a shaft, Gr, which is provided with twotoothed wheels, 9, one of which is contained within an opening in theside of each standard, and has its teeth in engagement with the groovedperiphery of the bar E contained Within, the arrangement being such thata rotation of said shaft will cause said standards to be simultaneouslymoved vertically, so as to raise or lower the end of the frame F, towhich the same are attached. A pawl, g, attached to each standard andadapted to engage with the wheel 9, prevents the latterfrom rotatingbackward, and operates to lock said upper frame in place.

The apparatus described is arranged beneath the space to be filled withartificial stone, and upon the upper adjustable frame is placed a centeror mold, H, for giving form to the arch or panel, after which saidadjustable frame is moved upward to position and the plastic stonefilled in between the girders I. After the plastic material hassufficiently hardened said supporting-frame is lowered and the apparatus moved to and set in another position and the operationdescribedrepeated.

This apparatusobviates the necessity which has heretofore existed formolding the artificial stone in blocks and setting the same, afterhardening, in position between the girders, and by its use arches orpanels which are homogeneous and possess very great strength may beeasily and quickly filled in.

Having thus fully set forth the nature and merits of myinvention, what Iclaim as new 1s- As an improvement in the manufacture of artificialstone, a rolling support adapted to be placed beneath and adjustedvertically to position with reference to the space to be filled and tosustain the plastic stone while hardening, substantially as and for thepurpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this18th day of July, 1881. WM. H. HOOPES.

Vitnesses:

GEO. S. PRINDLE,

HENRY O. HAZARD.

